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PDF: Very High Resolution Small Animal PET

Download 17 times Source: www.physics.ohio-state.edu // Topic: Animal Pet File Size: 502.28 kb // Total of Page: 11 Page(s) Last download by Pankaj004 Last download on: 8 months ago Share this info: Sample of page (click to enlarge) Short Desciption: ventional PET into the small animal domain. The main issue that needs to be ... This energy resolution is not exploited in our current small animal PET ... Content Inside: Very High Resolution Small Animal PET Don J. Burdette Department of Physics The Ohio State University April 26, 2005 Abstract Positron Emission Tomography (PET) is a leading technique in medical diagnostic imaging. PET scanners are used to detect cancerous cells through the use of a positron emitting tracer that is ingested by the patient. The positron annihilates with an electron in the body producing a pair of 511keV gamma rays emitted in opposite directions. The gamma rays are sufficiently energetic to leave the patients body and to reach an external detector. In conventional PET systems these gamma rays are absorbed by interacting with scintillation crystals that convert the gamma rays energy into small flashes of light that are collected by an array of photomultiplier tubes. This information gives the energies and positions of the pair of photons and is later used to reconstruct an image with typical system resolution of 10 mm for